scholarly journals Seismic Effects on Different Structural Members

2021 ◽  
Vol 9 (VII) ◽  
pp. 1481-1485
Author(s):  
Shobhit Gajbhiye
Keyword(s):  
Shear Wall ◽  
Earthquake Resistance ◽  
Structural Performance ◽  
Structural Members ◽  
Seismic Effects ◽  
Earthquake Excitation ◽  
Lateral Forces ◽  
Building Effects ◽  
Area Unit ◽  
Earthquake Area

Civil engineers deal with constructing differing types of structures with guaranteeing safety, sturdiness and utility. Currently days “earthquake “is a natural tragedy that affects the structures with their safety and utility. The quantity of harm that earthquake will cause to structures is rely upon sort of building, sort of soil, Technology used for earthquake resistance, and last however not the smallest amount Location of building. Effects of earthquake area unit mostly counting on sort of soil within which foundation of building is finished as a result of earthquake changes the motion of ground that results the failure foundation. Therefore it's vital to check the behavior of various soils at the time of construction of structures. Earthquake will be resisted by varied technologies utilized in building, one amongst these area unit shear wall. It improves the structural performance of building subjected to lateral forces because of earthquake excitation. Much analysis comes area unit afoot worldwide for development of effective ways for estimating unstable demands for performance-based engineering of buildings.

scholarly journals Influence of Shear Wall on Seismic Response of a Structure

2021 ◽  
Vol 9 (9) ◽  
pp. 1054-1060
Author(s):  
Siddhesh Bisane
Keyword(s):  
Structural Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Main Concern ◽  
Structural Members ◽  
Lateral Loads ◽  
Comprehensive Understanding ◽  
High Rise ◽  
Story Drift ◽  
Wall Following

Abstract: Structural analysis is the science of determining the effects of different loads on structures. Structural stability and stiffness are a main concern in any high-rise structures. Shear walls are structural members that are mainly responsible for resisting lateral loads predominant on structures. They are mainly responsible to increase the stiffness, reduce story drift and displacement. In order to have a comprehensive understanding about the contribution of shear wall, following research is carried out. This research involves comparing two G+16 structures; one without a shear wall and one with it. The structure has 4 bays of 3m each along X direction and Z direction. In this, we will see how shear wall resists lateral sway and reduces story drift and increases stiffness. As the height increases, the shear wall absorbs more lateral load than the frame. The software to be used for analysis is STAADPro. Keywords: STAADPro, Stiffness, storey displacement, storey drift.

scholarly journals An estimation method for seismic effects of reinforced concrete non-structural walls to structural frame members

1989 ◽  
Vol 22 (2) ◽  
pp. 90-97
Author(s):  
Masamichi Ohkubo
Keyword(s):  
Reinforced Concrete ◽  
Residential Buildings ◽  
Estimation Method ◽  
Structural Members ◽  
Seismic Effects ◽  
Structural Walls ◽  
High Rise ◽  
Structural Frame ◽  
Weak Points

To resolve the undesirable effects of reinforced concrete non-structural walls to the earthquake behaviour of structural members, weak points (called "Structural Slits") are intentionally provided at the connection between structural members and non-structural walls. This paper presents an estimation method for the stress developed in the "Structural Slits" which are applied to the non-structural walls of reinforced concrete high-rise residential buildings.

Prospect for Implementation of Road Infrastructure Asset Management

2017 ◽  
Vol 21 ◽  
pp. 366-371
Author(s):  
Hiroshi Yokota ◽  
Kohei Nagai ◽  
Koji Matsumoto ◽  
Yi Yi Mon
Keyword(s):  
Life Cycle ◽  
Asset Management ◽  
Life Cycle Management ◽  
Structural Performance ◽  
Infrastructure Management ◽  
Structural Members ◽  
Engineering Work ◽  
Subsequent Loss ◽  
Long Life ◽  
Support Engineering

Infrastructure has to be adequately planned, designed, executed and maintained to keep its structural performance over respective requirements throughout its life-cycle. However, infrastructure suffering from serious deterioration in structural members and subsequent loss in performance have been often found due to various reasons. To meet these facts, it is extremely important to pursue coordination of engineering work in the stages of design, execution and maintenance. The infrastructure management including the concepts of the life-cycle management and the asset management is an organized system to support engineering-based decision making for ensuring sufficient structural performance and long life of a structure at the design, execution, maintenance, and all related work during its life-cycle. This paper deals with infrastructure management system and an example of its application for a road bridge from seriously deteriorated.

scholarly journals Effect of Soil Flexibility on Seismic Force Evaluation of RC Framed Buildings with Shear Wall: A Comparative Study of IS 1893 and EUROCODE8

2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
B. R. Jayalekshmi ◽  
H. K. Chinmayi
Keyword(s):  
Comparative Study ◽  
Shear Wall ◽  
Spectral Acceleration ◽  
Base Shear ◽  
Lateral Forces ◽  
Standard Code ◽  
Seismic Force ◽  
Four Corners ◽  
Soil Flexibility ◽  
European Code

Conventional analyses of structures are generally carried out by assuming the base of structures to be fixed. However, the soil below foundation alters the earthquake loading and varies the lateral forces acting on structure. Therefore, it is unrealistic to analyse the structure by considering it to be fixed at base. Multistorey reinforced concrete framed buildings of different heights with and without shear wall supported on raft foundation incorporating the effect of soil flexibility are considered in present study to investigate the differences in spectral acceleration coefficient (Sa/g), base shear, and storey shear obtained following the seismic provisions of Indian standard code and European code. Study shows that the value of base shear obtained for symmetric plan building is lowest in buildings with shear wall at all the four corners.

scholarly journals Experimental Study on Structural Performance of RC Exterior Beam-Column Joints Retrofitted by Steel Jacketing and Haunch Element under Cyclic Loading Simulating Earthquake Excitation

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Cong-Thuat Dang ◽  
Ngoc-Hieu Dinh
Keyword(s):  
Cyclic Loading ◽  
Failure Load ◽  
Structural Performance ◽  
Dissipated Energy ◽  
Control Specimen ◽  
Seismic Capacity ◽  
Earthquake Excitation ◽  
Damage And Failure ◽  
Panel Zone ◽  
Energy Dissipation Capacity

Several retrofitting methods for reinforced concrete (RC) beam-column joints in old buildings without seismic details were developed. Four half-scale RC exterior beam-column joints were fabricated and tested under cyclic loading simulating earthquake excitation. The control specimen was designed to fail in joint shear. Two practical retrofitting strategies were applied to the control specimen which consider the architectural characteristic in real buildings, including steel jacketing and haunch retrofit solution. The structural performance of the test specimens was investigated in terms of various factors including damage and failure, load-drift relationship, ductility, dissipated energy, and strain profiles of longitudinal reinforcement. Experimental results confirmed that the proposed retrofit methods were shown to enhance the seismic capacity of the joints in terms of the strength, deformation capacity, and energy dissipation capacity while the shear deformation in the panel zone significantly reduced in comparison with the control specimen.

Optimal structure control for earthquake resistance

2021 ◽  
pp. 1-7
Author(s):  
Xianyang Yang ◽  
James D. Lee
Keyword(s):  
Optimal Control ◽  
Structural Control ◽  
Algorithm Design ◽  
Computer Software ◽  
Earthquake Resistance ◽  
Control Law ◽  
State Variables ◽  
Optimal Control Strategy ◽  
Earthquake Excitation ◽  
History Of

This work developed the optimal and active control algorithms applicable to structural control for earthquake resistance. [Lewis, F. L., Vrabie, D. and Syrmos, V. L. [2012] Optimal Control (John Wiley & Sons)] developed a rigorous and comprehensive procedure for the derivation of an optimal control strategy based on the calculus of variation. This work is an application of Lewis’ formulation to the control of a structure for earthquake resistance. We developed a computer software which can be used to generate a dynamic model to simulate a planar structure and to construct the control law. This model also includes the tendon driven actuators, sensors and true history of earthquake excitation. The control law has two parts: (I) the feedback control which depends on the estimate state variables (Kalman filter) and (II) the record of the realistic earthquake excitation. The optimal control problem eventually leads to a two-point boundary value problem whose solution hinges on the knowledge of the entire history of the earthquake excitation. We employ true records of earthquake excitation as input. This approach enables one to solve the Riccati equations rigorously. Then, from the simulation results, one may study the relations between the control algorithm design and the characteristics (frequency, amplitude and duration) of earthquake excitation.

scholarly journals Structural Performance of Polyurethane Foam-Filled Building Composite Panels: A State-Of-The-Art

2019 ◽  
Vol 3 (2) ◽  
pp. 40 ◽  
Author(s):  
Bijan Samali ◽  
Saeed Nemati ◽  
Pezhman Sharafi ◽  
Farzaneh Tahmoorian ◽  
Farshad Sanati
Keyword(s):  
Building Construction ◽  
Shear Behaviour ◽  
Structural Performance ◽  
Tensile Behaviour ◽  
Composite Panels ◽  
Structural Members ◽  
The Past ◽  
Pu Foam ◽  
Foam Filled ◽  
Filled Composite

Composite panels with polyurethane (PU) foam-core and facing materials, such as gypsum, engineered wood or some composite materials, are being used as structural members in building construction. This paper reviews and summarises major research developments, and provides an updated review of references on the structural performance of foam-filled building composite panels from 1998 to 2017. The review revealed that previous studies on the structural performance of foam-filled building composite panels could be categorised into five themes; namely, energy absorption and dynamic behaviour; bending and shear behaviour, edgewise and flatwise compressive/tensile behaviour; delamination/deboning issues; and finally some miscellaneous issues. These categories comprise approximately 30%, 40%, 11%, 11% and 8% of related studies over the last two decades, respectively. Also, over the past five years, the number of relevant studies has increased by ~400% relative to the previous similar periods, indicating the attention and focus of researchers to the importance of the structural performance of foam-filled composite panels.

Reuse System of Building Steel Structures - Structural Performance of Reusable Members and Practical Examples

2012 ◽  
Vol 517 ◽  
pp. 513-521 ◽  
Author(s):  
Masanori Fujita
Keyword(s):  
Life Cycle ◽  
Steel Structures ◽  
Structural Member ◽  
Structural Performance ◽  
Structural Members ◽  
Crucial Element ◽  
Environmental Burden ◽  
The Past ◽  
Steel Members ◽  
Reuse System

Longevity, reuse and recycle can be effective in reducing environmental burden in the life cycle of building steel structures. Longevity is the most crucial element in reducing the environmental burden of building steel structures. Nevertheless, there are always a number of buildings that need to be demolished for physical, architectural, economic, and social reasons. When such building steel structures have been demolished in the past, their structural members have been scrapped for recycling. Steel, by nature, is the only type of structural member that can be fabricated. Even without special joints that facilitate demolition work, steel members can be reused after minor fabrication procedures such as cutting, drilling, and welding. In this paper we discuss structural performance of reusable members and practical examples using reusable members.

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